Tree preservation zone

There is a problem

1000 entries with tree-preservation-order field must match the reference field in the tree preservation order dataset

reference: 615
name: THE BIRMINGHAM (18-22 NORFOLK ROAD, SUTTON COLDFIELD) TPO 1993
tree-preservation-order: undefined
TPO 615
tree-preservation-zone-type: area
geometry: MULTIPOLYGON (((-1.824094 52.574641,-1.823706 52.574329,-1.823537 52.574401,-1.823636 52.574482,-1.823183 52.574674,-1.823465 52.574864,-1.823637 52.574864,-1.823940 52.574733,-1.824094 52.574641)))
point: POINT (-1.823656 52.574636)
notes: The shaded area represents those properties which fall within the outline of a Tree Preservation Order. To precisely identify trees protected by the Order, you can request a copy of the tree preservation order at the following link.
organisation
entry-date: 2025-11-30
start-date
end-date

Your dataset is missing the tree-preservation-order column.

The Tree preservation zone guidance explains how to fix the issue:

The reference for the tree preservation order that covers this zone.